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Related Concept Videos

Somatosensation01:33

Somatosensation

42.8K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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Parallel Processing01:20

Parallel Processing

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The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

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The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
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Synesthesia01:27

Synesthesia

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Synesthesia is a remarkable condition where stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway. People with synesthesia experience a blending or crossing of their senses, such as sight and sound, leading to cross-modal sensations. In this condition, the stimulation of one sense, such as hearing a number or musical note, triggers an experience of another sense, like sensing a specific color, taste, or smell. People...
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Introduction to Special Senses01:26

Introduction to Special Senses

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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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What is a Sensory System?01:31

What is a Sensory System?

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Sensory systems detect stimuli—such as light and sound waves—and transduce them into neural signals that can be interpreted by the nervous system. In addition to external stimuli detected by the senses, some sensory systems detect internal stimuli—such as the proprioceptors in muscles and tendons that send feedback about limb position.
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Related Experiment Video

Updated: Jan 2, 2026

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
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Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

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Multisensory and spatial processes in sensory substitution.

Malika Auvray1

  • 1Institut des Systèmes Intelligents et de Robotique, CNRS UMR 7222, Sorbonne Université, Paris, France.

Restorative Neurology and Neuroscience
|December 5, 2019
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Summary

Sensory substitution devices leverage brain plasticity to compensate for sensory loss. Research explores optimizing these devices and understanding the multisensory experience they create.

Keywords:
Sensory substitutionblindnessbrain plasticitylearningrehabilitation technologies

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Area of Science:

  • Neuroscience
  • Human-Computer Interaction
  • Rehabilitation Engineering

Background:

  • Sensory substitution devices (SSDs) convert stimuli from a deficient sense (e.g., vision) to another (e.g., touch, audition).
  • Previous studies highlight significant neuroplasticity in response to SSD use.
  • Research has investigated plasticity using behavioral and brain-imaging techniques.

Purpose of the Study:

  • Investigate factors influencing learning and user adaptation with SSDs.
  • Enhance SSD design by incorporating crossmodal correspondences and individual reference frames.
  • Characterize the user experience with SSDs, moving beyond single-modality perspectives.

Main Methods:

  • Behavioral assessments of learning and adaptation.
  • Brain-imaging techniques to study neural plasticity.
  • User-centered design incorporating crossmodal correspondences and individual differences.

Main Results:

  • Identified key factors for successful SSD learning and user adequacy.
  • Demonstrated potential for design improvements through crossmodal principles.
  • Characterized SSD experience as inherently multisensory, involving auditory, tactile, and cognitive processes.

Conclusions:

  • SSDs offer a promising avenue for compensating sensory deficits by harnessing neuroplasticity.
  • Optimizing SSDs requires considering crossmodal correspondences and individual user differences.
  • The experience of using SSDs is a complex, multisensory integration, influenced by individual factors.